Film production with flaxseed mucilage and polyvinyl alcohol mixtures and evaluation of their properties
- PDF / 717,699 Bytes
- 9 Pages / 595.276 x 790.866 pts Page_size
- 59 Downloads / 198 Views
ORIGINAL ARTICLE
Film production with flaxseed mucilage and polyvinyl alcohol mixtures and evaluation of their properties Pablo Henrique Eduardo Nazario de Paiva1 • Luana Gabrielle Correa2 • Ana Fla´via Sampaio Paulo3 • Geane Cristiane Balan3 • Elza Iouko Ida3 • Marianne Ayumi Shirai3
Revised: 31 August 2020 / Accepted: 16 September 2020 Ó Association of Food Scientists & Technologists (India) 2020
Abstract Flaxseed mucilage was extracted with distilled water, dried and used for film production with polyvinyl alcohol (PVA) (ratio 1:1) of different hydrolysis degrees (88.0 and 98.3%). The properties of the films were evaluated by determining the thickness, tensile measurements, moisture content, water vapor permeability, apparent opacity, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) analysis and thermogravimetric analysis. Flaxseed mucilage, when mixed with PVA, produces less resistant, less rigid, more-flexible films, has a higher thermal stability, and does not change the water vapor barrier properties compared with pure mucilage films. SEM revealed that films with mucilage and PVA mixtures formed a compact and homogeneous structure, corroborating the FTIR spectra that indicated a chemical interaction between these two biopolymers. In general, the degree of PVA hydrolysis did not influence the properties of the films when mixed with flaxseed mucilage extract. Therefore, films obtained from mixtures of
& Marianne Ayumi Shirai [email protected] 1
Coordenac¸a˜o de Engenharia Quı´mica (COENQ), Universidade Tecnolo´gica Federal do Parana´, Campus Londrina, Avenida dos Pioneiros, 3131, Londrina, Parana´ CEP 86036-370, Brazil
2
Departamento Acadeˆmico de Alimentos (DAALM), Universidade Tecnolo´gica Federal do Parana´, Campus Londrina, Avenida dos Pioneiros, 3131, Londrina, Parana´ CEP 86036-370, Brazil
3
Programa de Po´s-Graduac¸a˜o em Tecnologia de Alimentos (PPGTAL), Universidade Tecnolo´gica Federal do Parana´, Campus Londrina, Avenida dos Pioneiros, 3131, Londrina, Parana´ CEP 86036-370, Brazil
flaxseed mucilage and PVA can be an interesting and advantageous alternative for producing bio-based packaging. Keywords Biodegradable film Casting Biopolymer Mucilage
Introduction The development of new biomaterials from agriculture byproducts and wastes is an ineluctable global trend and has been one of the key challenges of the new millennium to promote environmental protection and the application of green products (Gheribi et al. 2018). In this context, plant gums and mucilages have attracted much attention as natural hydrocolloids in the food industry and as raw materials for the production of films, microparticles, and nanofibers because of their non-toxic, non-irritating nature, low cost, and other advantages (Beigomi et al. 2018; Raj et al. 2020). Mucilage is defined as a gelatinous substance or hydrocolloid type that has strong interactions between polysaccharides and proteins (Lai and Liang 2012; Zeng and Lai 2016), and, when mixed with water, it forms
Data Loading...
